3. ridge area on the retention latch
Next steps
1. Install the mezzanine card, see Installing the mezzanine card.
2. Follow the procedure listed in After working inside your system.

Installing the mezzanine card

Prerequisites
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
NOTE: You must remove the mezzanine card to replace a faulty mezzanine card or service other
components inside the system.
1. Ensure that you read the Safety instructions.
2. Remove the mezzanine card, see Removing the mezzanine card.
Steps
1. Open the retention latch by pressing the ridged area on the retention latch with your thumb and
lifting the end of the latch.
2. If present, remove the connector cover from the mezzanine card bay.
CAUTION: To prevent damage to the mezzanine card, you must hold the card only by its
edges.
3. Rotate the card to align the connector on the bottom of the mezzanine card with the corresponding
socket on the system board.
4. Lower the card into place until it is fully seated and the plastic clip on the outer edge of the card
engages over the side of the blade chassis.
5. Close the retention latch to secure the mezzanine card.
Next steps
Follow the procedure listed in After working inside your system.
IDSDM card (optional)
The Internal Dual SD Module (IDSDM) card provides two SD card slots and a USB interface dedicated for
the embedded hypervisor. This card offers the following features:
Dual card operation — maintains a mirrored configuration using SD cards in both slots and provides
redundancy.
Single card operation — single card operation is supported, but without redundancy.
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